Russia’s foreign minister warned the U.S., South Korea and Japan against forming a security partnership targeting North Korea as he visited his country’s ally for talks on further solidifying their booming military and other cooperation.

Russian Foreign Minister Sergey Lavrov spoke Saturday at North Korea’s eastern Wonsan city, where he met the country’s leader, Kim Jong Un, and conveyed greetings from President Vladimir Putin.

Kim during the meeting reaffirmed his government’s commitment to “unconditionally support and encourage all measures” taken by Russia in its conflict with Ukraine.